code: def test_completions_simple1(self):
      suggestions = OptsCompleter.line_completer(
          "%%opts An", self.completions, self.compositor_defs
      )
      self.assertEqual(suggestions, self.all_keys)
  
file_path: holoviews/holoviews/tests/ipython/test_optscompleter.py
imports: from unittest import SkipTest
label_desc: Use image node_id 3 for calling the TestOptsCompleter obj's underlying member method code with example usage: obj.test_completions_simple1() without return types